Star · ?
GJ 1042
GJ 1042 is a white dwarf of spectral type ? in the constellation Andromeda, 56.0 light-years from the Sun.
| Constellation | Andromeda |
|---|---|
| Distance | 56.0 light-years (17.2 pc) |
| Apparent magnitude | magnitude 14.52 |
| Absolute magnitude | magnitude 13.35 |
| Spectral type | ? |
| Surface temperature | 8,000 K |
| Luminosity | 4.14 × 10⁻⁴ L☉ |
| Radius | 0.012 R☉ |
| Mass | 0.6 M☉ (estimated) |
| Right ascension (J2000) | 2h 11m 19.5s |
| Declination (J2000) | +39° 55′ 20″ |
| Space velocity (relative to the Sun) | 97.5 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 14.52. Visible from the whole Northern Hemisphere and south to latitude 50° S. North of latitude 50° N it never sets. It stands highest at midnight in October, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1970. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 994 thousand years.
The Sun seen from there
From a planet around GJ 1042, the Sun would look like a star of magnitude 6.00, in the direction where our sky has the constellation Centaurus. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 3121 7.86 light-years
- 2MASSI J0213288+444445 8.69 light-years
- WISE J014656.66+423410.0 8.84 light-years
- WISE J024714.52+372523.5 8.99 light-years
- Gl 84.2A 9.21 light-years
- Gl 84.2B 9.21 light-years
- GJ 3136 9.29 light-years
- Gl 67 9.80 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.